Samsung appliances were bought for our kitchen. The microwave sensor which supports things like popcorn and cook until done vs time went out just after the 1yr warranty. Replacing the sensor costs about the same as a new microwave. The refrigerator started freezing up behind the panel in the fridge compartment until the blades of the fan would make a racket and eventually stop. Opened and defrosted a couple times then found an online notice about moving a thermocouple from one line to another to change the defrost cycle, no issues since. However, they certainly do get you on recurring replacement water filter costs... ridiculous. The stove still works, but the led display has lost one dot in the colon between the numbers, and one portion of one digit is looking like it is about to go. The door switch for the inside light is crazy sensitive and often walking across the floor by the stove will cause the light to flash on and off. The dishwasher has a section at the very top for small items to lay flat like silverware, etc. This has a rubbery surfaced mat which will lift out to carry to the drawer, which has practically disintegrated in less than 3 yrs.
Samsung TV in the living room. Smart apps for the TV work fine with no need for a Roku or similar device. The apps do seem to be updated when the underlying service rolls out changes to other devices such as Roku, albeit sometimes with a few months delay. I read online of some TV apps never getting updated, so I feel lucky about this. Setting up the remote for the TV to control a sound bar (connected via digital optical cable) and cable box connected via hdmi was a challenge to get the remote changing sound bar volume. It was definitely not intuitive and there is essentially no manual available.
My 81yr old Mom has an LG TV. The remote for it controls a pointer on the TV screen which is very contrary in daily use. Sometimes you point intuitively and the next time you have to aim way off to the left/right/up/down. They have a Roku connected, and if the TV gets on the wrong input they have difficulty getting it back even after removing all inactive inputs, because you can't disable them all, so there is always at least 1 other input besides the hdmi for the Roku. The TV works great, but consider your audience for ease of use.
My sons each have TCL Roku TVs. They are dead simple to use, and inexpensive by comparison. Would definitely consider another one. Picture quality and features are quite good.